On 12/07/2017 10:53 AM, Peter Otten wrote:
Ethan Furman wrote:
The simple answer is No, and all the answers agree on that point.
It does beg the question of what an identity function is, though.
My contention is that an identity function is a do-nothing function that
simply returns what it was given:
--> identity(1)
1
--> identity('spam')
'spam'
--> identity('spam', 'eggs', 7)
('spam', 'eggs', 7)
Hm, what does -- and what should --
identity(('spam', 'eggs', 7))
produce?
Well, since it's the lowly "," that makes a tuple (not the parentheses), those
extra parentheses don't have any affect.
If you were trying to get a 3-item tuple inside a 1-item tuple:
(('spam', 'eggs', 7), )
Then you would need:
--> identity( (('spam', 'eggs', 7), ) )
(('spam', 'eggs', 7),)
Okay, actually sometimes it takes both. ;)
--
~Ethan~
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